EP2672550A1 - Batterie rechargeable - Google Patents

Batterie rechargeable Download PDF

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Publication number
EP2672550A1
EP2672550A1 EP13170167.4A EP13170167A EP2672550A1 EP 2672550 A1 EP2672550 A1 EP 2672550A1 EP 13170167 A EP13170167 A EP 13170167A EP 2672550 A1 EP2672550 A1 EP 2672550A1
Authority
EP
European Patent Office
Prior art keywords
circuit board
protective
protective device
protective circuit
electrode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP13170167.4A
Other languages
German (de)
English (en)
Inventor
Bo-Hyun Byun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung SDI Co Ltd
Original Assignee
Samsung SDI Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung SDI Co Ltd filed Critical Samsung SDI Co Ltd
Publication of EP2672550A1 publication Critical patent/EP2672550A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/574—Devices or arrangements for the interruption of current
    • H01M50/581—Devices or arrangements for the interruption of current in response to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the following description relates generally to a rechargeable battery. More particularly, the following description relates to a rechargeable battery including a protective circuit module having an improved (and/or simplified) structure.
  • a rechargeable battery can be repeatedly charged and discharged.
  • a small-capacity rechargeable battery is used for small portable electronic devices (such as mobile phones, notebook computers, camcorders, or the like), while a large-capacity rechargeable battery is used as a motor-driving power source or large-capacity power storage device for a hybrid vehicle, and the like.
  • the rechargeable battery can have an operation voltage of about 3.6V. Overcharge or over-discharge may occur while the rechargeable battery is repeatedly charged and discharged. Accordingly, gas or heat may be generated due to decomposition of an electrolyte solution of the rechargeable battery that is caused by the overcharge or over-discharge of the rechargeable battery, which may lead to deteriorated performance or damage of the rechargeable battery.
  • the protective circuit module is used to prevent (protect from) the over charge or over-discharge of the rechargeable battery.
  • the protective circuit module includes a protective device and a protective circuit board.
  • the protective circuit board is electrically connected with the protective device and a bare cell to form a current path between the protective device and the bare cell.
  • the protective device is electrically connected to a negative electrode of the rechargeable battery.
  • the protective circuit board is electrically connected to a positive electrode of the rechargeable battery.
  • the protective device and the protective circuit board are electrically connected to form the current path between the protective device, the protective circuit board, and the negative and positive electrodes.
  • the protective device and the protective circuit board are sequentially stacked and combined on a case.
  • the protective circuit module may be formed by disposing the protective device on a cap plate which is combined with an opening of the case and attaching the protective circuit board on the protective device.
  • the additional structure which is required to connect the bare cell with the protective device and the protective circuit board, may result in an increase in volume of the protective circuit module. Also, there is another problem in that a process of assembling the rechargeable battery may become complicated.
  • An aspect of an embodiment of the present invention is directed toward a rechargeable battery including a protective circuit module having a small volume, where the protective device and the protective circuit board are easily combined.
  • Another aspect of an embodiment of the present invention is directed toward a rechargeable battery formed through a simplified process of assembling the bare cell and the protective circuit module.
  • a rechargeable battery includes a case, an electrode assembly received by the case, a cap plate combined with the opening of the case, a protective circuit board electrically connected with a first electrode of the electrode assembly, and a protective device attached to a top surface or side surface of the protective circuit board, electrically connected with a second electrode of the electrode assembly, and electrically connected with the protective circuit board.
  • a rechargeable battery includes a bare cell and a protective circuit module.
  • the bare cell includes a case for housing an electrode assembly and a cap plate for capping an opening of the case.
  • the protective circuit module includes a protective circuit board electrically connected with a first electrode of the electrode assembly and a protective device.
  • the protective device includes: a first protective device portion mounted to a first surface of the protective circuit board to be electrically connected with the protective circuit board, and a second protective device portion electrically connected with a second electrode of the electrode assembly and mounted on a second surface of the protective circuit board, the second surface facing oppositely away from the first surface.
  • the rechargeable battery further includes a lead tab.
  • the lead tap includes a protective circuit board connecting part electrically connected with the protective circuit board and a cap plate connecting part electrically connected with the first electrode.
  • the rechargeable battery further includes a conductive connection member.
  • the conductive connection member includes an electrode terminal part electrically connected with the second electrode and a protective circuit board combining part electrically connected with the second protective device portion.
  • the conductive connection member further includes a body electrically connecting the electrode terminal part with the protective circuit board combining part, the body being a curved body curved toward the protective circuit board combining part to be overlapped and attached between the protective circuit board and the cap plate.
  • the protective circuit board may be stacked on the curved body of the conductive connection member.
  • the protective circuit board may include: a protective device connection pattern electrically connected with the first electrode on the first surface; and an electrode connecting part electrically connected with the second electrode via the conductive connection member on the second surface and insulated from the protective device connection pattern.
  • the protective circuit board combining part is electrically connected with the second protective device portion on the second surface of the protective circuit board.
  • the rechargeable battery further includes an insulation member between the protective circuit board and the cap plate, wherein the conductive connection member is disposed on the insulation member and attached between the protective circuit board and the insulation member.
  • the insulation member may have a terminal combining hole, and the electrode terminal part of the conductive connection member may be connected with the second electrode via a second electrode terminal penetrating through the terminal combining hole.
  • the protective device further includes a third protective device portion, and the first and second protective device portions extend from a same side of the third protective device portion along a same direction on the protective circuit board.
  • the protective device further includes a third protective device portion arranged laterally to a third surface of the protective circuit board to electrically connect the first protective portion with the second protective device portion, and the first surface of the protective circuit board is connected with the second surface of the protective circuit board via the third surface of the protective circuit board.
  • the first protective device portion includes a protective device body and a protective device protrusion extending at one side of the protective device body and electrically connected with the first electrode on the first surface of the protective circuit board, the protective device body including a protective chip or lead; and the second protective device portion includes a fixing part electrically connected with the second electrode on the second surface of the protective circuit board.
  • the third protective device portion includes a protective device body arranged laterally to the third surface of the protective circuit board and a protective device supporting part body;
  • the protective device body includes a protective chip or lead;
  • the protective device supporting part body supports a surface of the protective device body;
  • the first protective device portion includes a protective device protrusion extending at one side of the protective device body and electrically connected with the first electrode on the first surface of the protective circuit board;
  • the second protective device portion includes a supporting part protrusion extending at one side of the protective device supporting part body and electrically connected with the second electrode on the second surface of the protective circuit board.
  • the length (L2) of the protective circuit board may be less than the length (L1) of the protective circuit module, and/or the length (L1) of the protective circuit module may encompass both the length of the protective device body and the length (L2) of the protective circuit board.
  • the third protective device portion includes a protective device body arranged laterally to the third surface of the protective circuit board; the protective device body includes a protective chip or lead; the first protective device portion includes a first protective device protrusion extending at one side of the protective device body and electrically connected with the first electrode on the first surface of the protective circuit board; and the second protective device portion includes a second protective device protrusion also extending at the one side of the protective device body, separated from the first protective device protrusion, and electrically connected with the second electrode on the second surface of the protective circuit board.
  • the protective device body may be integrally provided with the first protective device protrusion and the second protective device protrusion.
  • the protective circuit board includes an outer terminal for electrically connecting the electrode assembly to an external device.
  • the rechargeable battery may further include an insulating member between the protective circuit board and the cap plate at where the outer terminal is positioned, to protect from a penetration of a lead between the protective circuit board and the cap plate.
  • the rechargeable battery further includes a cover covering the protective circuit board and the protective device, and injection molded into a space between the bare cell and the protective circuit module.
  • the protective device and the protective circuit board constitute the protective circuit module.
  • FIG. 1 is an exploded perspective view illustrating a rechargeable battery according to a first embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of the rechargeable battery taken along line II-II in FIG. 1 .
  • FIG. 3 is an exploded perspective view illustrating a protective device and a protective circuit board of FIG. 1 .
  • FIG. 4 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 3 .
  • FIG. 5 is an exploded perspective view illustrating a protective device and a protective circuit board according to a second embodiment of the present invention.
  • FIG. 6 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 5 .
  • FIG. 7 is an exploded perspective view illustrating a protective device and a protective circuit board according to a third embodiment of the present invention.
  • FIG. 8 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 7 .
  • FIG. 9 is an exploded perspective view illustrating a protective device and a protective circuit board according to a fourth embodiment of the present invention.
  • FIG. 10 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 9 .
  • FIG. 1 is an exploded perspective view illustrating a rechargeable battery according to a first embodiment of the present invention
  • FIG. 2 is a cross-sectional view of the rechargeable battery taken along line II-II in FIG. 1 .
  • a rechargeable battery 100 includes a bare cell 10, a first insulation member 20, a conductive connection member 30, a protective circuit module including a protective circuit board 40 and a protective device 50, a top cover 60, a lead tab 70, a second insulation member 80, and a bottom cover 90.
  • the bare cell 10 includes a case 11 having a built-in electrode assembly (shown in dash lines), a cap plate 12 attached to an opening of the case 11, an electrode terminal 13 attached to the cap plate 12, a gasket 14 for insulating the electrode terminal 13 and the cap plate 12, first and second combining parts 15 and 16, and a gas outlet 17.
  • the case 11 has an approximately hexahedral shape and an opening at one side thereof. Accordingly, the case 11 receives the electrode assembly including first and second electrodes and a separator between the first and second electrodes.
  • the first electrode is one of a positive electrode or a negative electrode
  • the second electrode is the other one of the positive electrode or the negative electrode.
  • the shape of the case 11 is not limited to the hexahedron, and the case 11 may have various suitable shapes, such as cylinder, pouch, or the like.
  • the cap plate 12 is composed of a thin plate material with electrical conductivity, and is combined with the opening of the case 11 to close and seal the opening.
  • the cap plate 12 is electrically connected to either the first electrode or the second electrode to have a positive or negative polarity.
  • the case 11 and the cap plate 12 according to the embodiment will be described as being electrically connected to the first electrode.
  • the electrode terminal 13 is electrically connected to the first or second electrode.
  • the electrode terminal 13 according to the embodiment will be described as being electrically connected to the second electrode.
  • a gasket 14 which is composed of an insulation material (for example, rubber or resin) is disposed between the electrode terminal 13 and the cap plate 12 to electrically insulate the electrode terminal 13 and the cap plate 12.
  • the first insulation member 20 has a surface facing the cap plate 12, which is applied with an adhesive, to be combined with the cap plate 12.
  • the electrode terminal 13 is inserted into a terminal combining hole 21 formed in the first insulation member 20, and the cap plate 12 is combined with a body 22 of the first insulation member 20 where the terminal combining hole is not formed.
  • the first insulation member 20 is disposed between the protective circuit board 40 and the cap plate 12 to electrically insulate the protective circuit board 40 and the cap plate 12.
  • the conductive connection member 30 has one end combined with the electrode terminal 13 and the other end connected with the protective circuit board 40 to electrically connect the electrode terminal 13 with the protective circuit board 40.
  • the conductive connection member 30 is disposed on the first insulation member 20 and attached between the protective circuit board 40 and the first insulation member 20.
  • the protective device 50 according to the embodiment is attached on and electrically connected to the protective circuit board 40.
  • the protective device 50 includes one or more wires formed of a material (for example, alloy of lead and tin) which has electrical conductivity and is melted over a certain temperature, and an insulating resin surrounding the wires.
  • a material for example, alloy of lead and tin
  • the protective circuit board 40 is electrically connected to the first electrode through the lead tab 70.
  • the lead tab 70 includes a protective circuit board connecting part 71 and a cap plate connecting part 72. Accordingly, the protective circuit board connecting part 71 is combined with a surface of the protective circuit board 40 facing the cap plate 12, and the cap plate connecting part 72 is combined with the cap plate 12 which is electrically connected to the first electrode.
  • a current path may be formed between the first electrode, the protective circuit board 40, the protective device 50, and the second electrode through both the conductive connection member 30 for electrically connecting the protective circuit board 40 with the electrode terminal 13 electrically connected to the second electrode, and the lead tab 70 for electrically connecting the protective circuit board 40 with the cap plate 12 electrically connected to the first electrode.
  • the protective device 50 if an overcurrent flows inside the rechargeable battery 100 according to the embodiment so that the protective device 50 reaches a certain temperature, the protective device 50 is melted to block the current path between the bare cell 10 and the protective circuit module.
  • the second insulation member 80 is attached between the protective circuit board 40 and the cap plate 12 to electrically insulate the protective circuit board 40 and the cap plate 12.
  • the second insulation member 80 has surfaces facing the protective circuit board 40 and the cap plate 12, which are applied with an adhesive, to be combined with the protective circuit board 40 and the cap plate 12, respectively.
  • the top cover 60 is formed through a hot-melt process.
  • the top cover 60 may be formed by injecting a resin heated at a certain temperature into a space between the bare cell 10 and the protective circuit module.
  • the top cover 60 has a terminal connecting part 61 and first and second combining holes 62 and 63 where first and second combining members 64 and 65 (here screws) are combined, respectively.
  • the top cover 60 is formed on the bare cell 10 to cover the protective circuit board 40 and the protective device 50.
  • the first and second combining members 64 and 65 are inserted into the first and second combining holes 62 and 63 and thus inserted and fixed to the first and second combining parts 15 and 16, which are formed on the cap plate 12, through a hole formed in the cap plate connecting part 72 of the lead tab 70.
  • the bottom cover 90 includes a bottom cover adhesive part 92 and a bottom cover body 91 including one or more protrusion parts.
  • the bottom cover 90 is formed of a conductive resin and combined with the bottom surface of the bare cell 10 using the bottom cover adhesive part 92. Accordingly, the bottom cover 90 insulates the bottom surface of the bare cell 10.
  • FIG. 3 is an exploded perspective view illustrating a protective device and a protective circuit board of FIG. 1
  • FIG. 4 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 3 .
  • the protective circuit board 40 includes a protective circuit, an outer terminal 41, one or more through holes 42, a protective device connection pattern 43, and an electrode connecting part 44.
  • the outer terminal 41 is connected to the protective circuit formed in the protective circuit board 40, using soldering.
  • the second insulation member 80 is attached between the protective circuit board 40 and the cap plate 12 to prevent lead from being penetrated between the protective circuit board 40 and the cap plate 12 when the outer terminal 41 is connected to the protective circuit board 40 with soldering.
  • At least one through hole 42 is formed through the protective circuit board 40 at one end of the protective circuit board 40.
  • the electrode connecting part 44 is formed by forming a groove at the bottom surface of the protective circuit board 40 and filling the groove with a conductive material.
  • the electrode connecting part 44 includes a conductive connection member combining part 44a, a protective device combining part 44c, and an electrode connecting part body 44b for connecting the conductive connection member combining part 44a with the protective device combining part 44c.
  • the protective device combining part 44c is extended up to the top surface of the protective circuit board 40 through the through hole(s) 42.
  • the conductive connection member 30 includes an electrode terminal connecting part 31, a body 32, and a protective circuit board combining part 33.
  • the protective circuit board combining part 33 is connected to the conductive connection member combining part 44a in a method such as soldering.
  • the protective circuit board 40 is combined with a lead tab 70 at one end, and is combined via the lead tab 70 with the cap plate 12 electrically connected to the first electrode.
  • the protective device 50 includes a protective device body 51 and a protective device protrusion 52 extended at one side of the protective device body 51.
  • the protective device protrusion 52 is electrically connected with the protective device connection pattern 43 formed in the protective circuit board 40.
  • a gap between the groove formed in the protective device protrusion 52 and the protective device connection pattern 43 is soldered to combine the protective device protrusion 52 with the protective device connection pattern 43.
  • the protective device 50 is combined with the protective device connection pattern 43 of the protective circuit board 40 to be electrically connected with the protective circuit board 40.
  • the protective device 50 may be electrically connected to the first electrode through the lead tab 70 electrically connected to the protective circuit board 40.
  • the protective device body 51 is attached on a portion of the top surface of the protective circuit board 40, where the through hole(s) 42 is(are) formed.
  • the bottom surface of the protective device body 51 may be contacted with the electrode connecting part 44 along the through hole(s) 42 of the protective circuit board 40.
  • the protective device 50 may be electrically connected to the electrode terminal 13 through the electrode connecting part 44.
  • the protective device body 51 is combined with the protective circuit board 40, using soldering.
  • the body 32 of the conductive connection member 30 is curved in a direction of the arrow shown in FIG. 3 toward the protective circuit board combining part 33.
  • the protective circuit board combining part 33 and the body 32 of the conductive connection member 30 are overlapped and attached between the protective circuit board 40 and the cap plate 12 (see FIG. 2 ).
  • the protective device 50 is attached on the protective circuit board 40 and electrically connected to the electrode connecting part 44 extended to the top surface of the protective circuit board 40 through the through hole (5) of the protective circuit board 40 and the protective device connection pattern 43 formed on the protective circuit board 40.
  • the protective device 50 is attached on the protective circuit board 40 without an additional element for connection to the protective circuit board 40 and may be electrically connected to the protective circuit board 40 and the electrode terminal 13.
  • the protective circuit board 40 and the protective device 50 are easily combined to easily manufacture the protective circuit module.
  • the protective device 50 is attached in direct contact with the protective circuit board 40.
  • the protective device 50 is attached in direct contact with the protective circuit board 40.
  • the protective circuit module is assembled by stacking the protective circuit board 40 on the curved conductive connection member 30 and then stacking the protective device 50 on the protective circuit board 40.
  • the protective circuit module is assembled by stacking the protective circuit board 40 on the curved conductive connection member 30 and then stacking the protective device 50 on the protective circuit board 40.
  • FIG. 5 is an exploded perspective view illustrating a protective device and a protective circuit board according to a second embodiment of the present invention
  • FIG. 6 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 5 .
  • a rechargeable battery according to an embodiment has the same configuration as the rechargeable battery 100 according to the first embodiment, other than a protective circuit board 140 and a protective device 150.
  • the protective circuit board 140 includes a protective circuit, an outer terminal 141, a protective device connection pattern 143, and an electrode connecting part 144.
  • the outer terminal 141, the protective device connection pattern 143, and the electrode connecting part 144 according to the embodiment have the same configuration as the outer terminal 41, the protective device connection pattern 43, and the electrode connecting part 44 according to the first embodiment of the present invention. Accordingly, a detailed description of the outer terminal 141, the protective device connection pattern 143 and the electrode connecting part 144 of the protective circuit board 140 will not be provided again.
  • the electrode connecting part 144 includes a conductive connection member combining part 144a, a protective device combining part 144c, and an electrode connecting part body 144b for connecting the conductive connection member combining part 144a with the protective device combining part 144c.
  • the protective device 150 includes a protective device body 152, a protective device protrusion 151 extended at one side of the protective device body 152, and a fixing part 153 curved and extended at the opposite of the surface where the protective device protrusion 151 is formed.
  • the fixing part 153 is extended in a direction approximately vertical to the bottom surface of the protective device body 152 and curved in a direction approximately parallel with the bottom surface of the protective device body 152.
  • the protective device protrusion 151 is electrically connected to the protective device connection pattern 143 formed in the protective circuit board 140.
  • a gap between the groove formed in the protective device protrusion 151 and the protective device connection pattern 143 is filled using soldering.
  • the fixing part 153 of the protective device 150 may be inserted and fixed to one end of the protective circuit board 140 and thus positioned on the protective device combining part 144c.
  • the protective device 150 is electrically connected to the electrode connecting part 144 through the fixing part 153 of the protective device 150.
  • the protective device body 152 and the protective device protrusion 151 may be attached on the top surface of the protective circuit board 140, and the fixing part 153 is combined with the bottom surface of the protective circuit board 140 and thus combined with the electrode connecting part 144.
  • the protective device 150 is electrically connected with the protective circuit board 140 and the electrode terminal 13.
  • the protective circuit module includes the protective circuit board 140 and the protective device 150.
  • the protective circuit board 140 is electrically connected with the first electrode of the electrode assembly.
  • the protective device 150 includes a first protective device portion mounted to a first surface of the protective circuit board 140 to be electrically connected with the protective circuit board 140, and a second protective device portion (e.g., the fixing part 153) electrically connected with the second electrode of the electrode assembly and mounted on a second surface of the protective circuit board 140, the second surface facing oppositely away from the first surface.
  • the protective device 150 further includes a third protective device portion, and the first and second protective device portions extend from a same side of the third protective device portion along a same direction on the protective circuit board.
  • the third protective device portion is mounted on a third surface of the protective circuit board 140 to electrically connect the first protective portion with the second protective device portion, and the first surface of the protective circuit board 140 is connected with the second surface of the protective circuit board 140 via a third surface (here perpendicular to the first surface and the second surface) of the protective circuit board 140.
  • a third surface here perpendicular to the first surface and the second surface
  • the first protective device portion includes the protective device body 152 and the protective device protrusion 151 extending at one side of the protective device body 152 and electrically connected with the first electrode on the first surface of the protective circuit board 140, the protective device body 152 including a protective chip or lead.
  • the second protective device portion includes the fixing part 153 electrically connected with the second electrode on the second surface of the protective circuit board 140.
  • the embodiment there is no need for an additional element for combining the protective circuit board 140 with the protective device 150, thereby easily manufacturing the protective circuit module, reducing volume in the protective circuit module, and simplifying a process of assembling the protective circuit module and the bare cell.
  • the fixing part 153 of the protective device 150 is inserted and fixed to one end of the protective circuit board 140, thereby easily combining the protective device 150 and the electrode connecting part 144, and stably combining the protective device 150 and the protective circuit board 140.
  • FIG. 7 is an exploded perspective view illustrating a protective device and a protective circuit board according to a third embodiment of the present invention
  • FIG. 8 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 7 .
  • a rechargeable battery according to an embodiment has the same configuration as the rechargeable battery 100 according to the first embodiment, other than a protective circuit board 240 and a protective device 250.
  • the protective circuit board 240 includes a protective circuit, an outer terminal 241, a protective device connection pattern 243, and an electrode connecting part 244.
  • the outer terminal 241, the protective device connection pattern 243, and the electrode connecting part 244 according to the embodiment may have the same configuration as the outer terminal 41, the protective device connection pattern 43, and the electrode connecting part 44 according to the first embodiment of the present invention. Accordingly, a detailed description of the outer terminal 241, the protective device connection pattern 243, and the electrode connecting part 244 of the protective circuit board 240 will not be provided again.
  • the electrode connecting part 244 includes a conductive connection member combining part 244a, a protective device combining part 244c, and an electrode connecting part body 244b for connecting the conductive connection member combining part 244a with the protective device combining part 244c.
  • the protective device 250 includes a protective device body 252, a protective device protrusion 251 extended at one side of the protective device body 252, and a protective device supporting part 253 combined with the bottom surface of the protective device body 252.
  • the protective device supporting part 253 includes a supporting part body 253a and a supporting part protrusion 253b extended at one end of the supporting part body 253a.
  • the protective device body 252 is attached to one end of the protective circuit board 240, and the protective device protrusion 251 is attached to the top surface of the protective circuit board 240 and electrically connected to the protective device connection pattern 243.
  • the supporting part 253 is combined to the bottom surface of the protective device 250.
  • the supporting part body 253a of the supporting part 253 is combined to the bottom surface of the protective device body 252, and the supporting part protrusion 253b is combined to the protective device combining part 244c.
  • the supporting part body 253a is combined to the bottom surface of the protective device body 252 using welding, and the supporting part protrusion 253b is combined to the protective device combining part 244c with soldering.
  • the protective circuit body 252 of the protective device 250 protrudes laterally from a side surface of the protective circuit board 240, not from the top surface of the protective circuit board 240.
  • the protective circuit board 240 may be designed to be relatively short in length, compared with when the protective device body 252 is combined to the top surface of the protective circuit board 240.
  • a length (L2) in a length direction of the protective circuit board 240 according to the third embodiment may be designed as being less than a length (L1) in a length direction of the protective circuit board 140 according to the second embodiment of the present invention (see also FIG. 5 ) by the length of the protective device body 252.
  • the protective device body 252 protrudes laterally from the side surface of the protective circuit board 240, the protective device protrusion 251 is attached on the top surface of the protective circuit board 240, the supporting part body 253a is combined with the bottom surface of the protective device body 252, and the supporting part protrusion 253b is combined with the electrode connecting part 244.
  • the protective device 250 may be electrically connected with the protective circuit board 240 and the electrode terminal 13.
  • the protective circuit module includes the protective circuit board 240 and the protective device 250.
  • the protective circuit board 240 is electrically connected with the first electrode of the electrode assembly.
  • the protective device 250 includes a first protective device portion mounted to a first surface of the protective circuit board 240 to be electrically connected with the protective circuit board, and a second protective device portion (e.g., the supporting part protrusion 253b) electrically connected with the second electrode of the electrode assembly and mounted on a second surface of the protective circuit board 240, the second surface facing oppositely away from the first surface.
  • the protective device 250 further includes a third protective device portion, and the first and second protective device portions extend from a same side of the third protective device portion along a same direction on the protective circuit board 240.
  • the third protective device portion is arranged laterally to a third surface of the protective circuit board 240 to electrically connect the first protective portion with the second protective device portion, and the first surface of the protective circuit board 240 is connected with the second surface of the protective circuit board 240 via the third surface of the protective circuit board 240.
  • the third protective device portion includes: the protective device body 252 extending from and arranged laterally to the third surface of the protective circuit board, and the protective device supporting part body 253a.
  • the protective device body 252 includes a protective chip or lead.
  • the protective device supporting part body 253a supports a surface of the protective device body 252.
  • the first protective device portion includes the protective device protrusion 251 extending at one side of the protective device body 252 and electrically connected with the first electrode on the first surface of the protective circuit board 240
  • the second protective device portion includes the supporting part protrusion 253b extending at one side of the protective device supporting part body 252 and electrically connected with the second electrode on the second surface of the protective circuit board 240.
  • the length of the protective circuit board 240 is less than the length of the protective circuit module, and/or the length of the protective circuit module encompasses both the length of the protective device body 252 and the length of the protective circuit board 240.
  • the embodiment there is no need for an additional element for combining the protective circuit board 240 with the protective device 250, thereby easily manufacturing the protective circuit module, reducing volume in the protective circuit module, and simplifying a process of assembling the protective circuit module and the bare cell.
  • the supporting part 253 is combined with bottom surfaces of the protective device body 252 and the protective circuit board 240, thereby easily combining the protective device 250 and the electrode connecting part 244, and stably combining the protective device 250 with the protective circuit board 240.
  • FIG. 9 is an exploded perspective view illustrating a protective device and a protective circuit board according to a fourth embodiment of the present invention
  • FIG. 10 is a side elevational view illustrating combination of the protective device and the protective circuit board of FIG. 9 .
  • a rechargeable battery according to the embodiment has the same configuration as the rechargeable battery according to the third embodiment, other than the protective device 350.
  • the protective device 350 includes a protective device body 351, and first and second protective device protrusions 352 and 353 extended at one side of the protective device body 351 and separated from each other.
  • the protective device body 351 is arranged laterally to the side surface of the protective circuit board 240, which is inserted between the first and second protective device protrusions 352 and 353.
  • the first protective device protrusion 352 is combined with the top surface of the protective circuit board 240 and thus electrically connected with the protective device connection pattern 243.
  • the second protective device protrusion 353 is combined with the bottom surface of the protective circuit board 240 and thus electrically connected to the protective device combining part 244c of the electrode connecting part 244.
  • the protective circuit module includes the protective circuit board 240 and the protective device 350.
  • the protective circuit board 240 is electrically connected with the first electrode of the electrode assembly.
  • the protective device 350 includes a first protective device portion (e.g., the first protective device protrusion 352) mounted to a first surface of the protective circuit board 240 to be electrically connected with the protective circuit board, and a second protective device portion (e.g., the second protective device protrusion 353) electrically connected with the second electrode of the electrode assembly and mounted on a second surface of the protective circuit board 240, the second surface facing oppositely away from the first su rface.
  • the protective device 350 further includes a third protective device portion, and the first and second protective device portions extend from a same side of the third protective device portion along a same direction on the protective circuit board 240.
  • the third protective device portion is arranged laterally to a third surface of the protective circuit board 240 to electrically connect the first protective portion with the second protective device portion, and the first surface of the protective circuit board 240 is connected with the second surface of the protective circuit board 240 via the third surface of the protective circuit board 240.
  • the third protective device portion includes a protective device body 351 extending from and arranged laterally to the third surface of the protective circuit board.
  • the first protective device portion includes the first protective device protrusion 352 extending at one side of the protective device body 351 and electrically connected with the first electrode on the first surface of the protective circuit board 240
  • the second protective device portion includes the second protective device protrusion 353 also extending at the one side of the protective device body 351.
  • the second protective device protrusion 353 is separated from the first protective device protrusion 352, and electrically connected with the second electrode on the second surface of the protective circuit board 240.
  • the protective device body 351 includes a protective chip or lead, and/or the protective device body 351 is integrally provided with the first protective device protrusion 352 and the second protective device protrusion 353.
  • the embodiment there is no need for an additional element for combining the protective circuit board 240 with the protective device 350, thereby easily manufacturing the protective circuit module, reducing volume in the protective circuit module, and simplifying a process of assembling the protective circuit module and the bare cell.
  • the protective device 350 may be easily and stably connected with the protective circuit board 240.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)
EP13170167.4A 2012-06-08 2013-05-31 Batterie rechargeable Withdrawn EP2672550A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261657579P 2012-06-08 2012-06-08
US13/671,551 US9093723B2 (en) 2012-06-08 2012-11-07 Rechargeable battery

Publications (1)

Publication Number Publication Date
EP2672550A1 true EP2672550A1 (fr) 2013-12-11

Family

ID=48537844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13170167.4A Withdrawn EP2672550A1 (fr) 2012-06-08 2013-05-31 Batterie rechargeable

Country Status (4)

Country Link
US (2) US9093723B2 (fr)
EP (1) EP2672550A1 (fr)
KR (1) KR20130138109A (fr)
CN (1) CN103490103A (fr)

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EP2887443A1 (fr) * 2013-12-17 2015-06-24 Samsung SDI Co., Ltd. Bloc-batteries
CN113921999A (zh) * 2020-07-07 2022-01-11 东莞新能德科技有限公司 电池、电池的出线方法及电子装置

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KR101985760B1 (ko) * 2013-01-17 2019-06-04 삼성에스디아이 주식회사 이차전지
KR101411584B1 (ko) * 2013-04-12 2014-06-24 김영대 배터리 보호 장치 제조 방법 및 배터리 보호 장치
KR101686608B1 (ko) * 2014-01-06 2016-12-28 주식회사 엘지화학 커넥터가 형성된 보호회로 기판을 포함하는 전지팩
CN105071450B (zh) * 2015-07-03 2018-03-02 常州华达科捷光电仪器有限公司 一种具有充电电池的激光仪器
KR102651576B1 (ko) * 2016-10-18 2024-03-27 삼성전자주식회사 배터리 모듈을 포함하는 전자 장치 및 제조 방법
KR102609867B1 (ko) 2019-12-11 2023-12-05 삼성에스디아이 주식회사 이차전지
CN115498367B (zh) * 2021-06-18 2024-10-01 北京小米移动软件有限公司 一种电池保护板、电池及电子设备

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US20090122455A1 (en) * 2007-11-08 2009-05-14 Samsung Sdi Co., Ltd. Ptc device, protective circuit module including the same, and secondary battery including the protective circuit module
US20090263711A1 (en) * 2008-04-18 2009-10-22 Bongyoung Kim Battery pack
EP2180538A1 (fr) * 2008-10-22 2010-04-28 Samsung SDI Co., Ltd. Module de circuit protecteur et batterie rechargeable l'incluant
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CN113921999A (zh) * 2020-07-07 2022-01-11 东莞新能德科技有限公司 电池、电池的出线方法及电子装置

Also Published As

Publication number Publication date
US20130330574A1 (en) 2013-12-12
US9093723B2 (en) 2015-07-28
KR20130138109A (ko) 2013-12-18
CN103490103A (zh) 2014-01-01
US20150303529A1 (en) 2015-10-22

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